Glossary
Walled garden
A closed digital ecosystem that controls its own user data, ad inventory, and measurement, limiting third-party access to granular information.
Where we write about walled garden
- ArticleCan You Actually Advertise on ChatGPT in 2026?
- ArticleChatGPT Ads ROI: What the Early Data Actually Shows in 2026
- ArticleHow to Advertise on ChatGPT: The Honest 2026 Answer
- ArticleHow to Buy ChatGPT Ads Without a Direct OpenAI Deal
- ArticleIntent-Based Targeting Inside AI Assistants: The 2026 Buyer's Guide
- ArticleDid OpenAI Just Reveal Ad Network Plans? What a Job Posting Means for AI Advertising
More in programmatic and supply
The exchanges, platforms and inventory an impression passes through.